Kao Soap Company, Ltd.

Koitsu Sato

Yunosuke Nakagawa

Masaaki Nishimura

A stable bleaching composition containing, as essential ingredients, an inorganic peroxide, an activating agent for said inorganic peroxide and potassium carbonate.

Stable bleaching composition

A bleaching composition is disclosed characterized by containing (a) sodium percarbonate which has been heated at a temperature of 75.degree. to 135.degree. C for a time ranging from 5 to 30 minutes at 135.degree. C to 2 to 6 hours at 75.degree. C and (b) an activating agent for the sodium percarbonate.

Foaming bleaching composition

A bleaching composition comprising an inorganic peroxide capable of releasing hydrogen peroxide in aqueous solution and an activating agent represented by the following general formula ##EQU1## wherein R stands for an alkyl group having 1 to 16 carbon atoms, a halogen- or hydroxyl-substituted alkyl group having 1 to 16 carbon atoms or a substituted aryl group, B designates a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, M represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms or an alkali metal, and n is an integer of at least 1 when M is an alkyl group or n is an integer of at least 2 when M is a hydrogen atom or an alkali metal.

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Funabashi, Japan

Koitsu Sato